Based on the amino acid sequence data for the Cytochome-C protein, chimpanzees and humans share an identical coding sequence. What other species identified on the chart has a coding sequence that is most closely related to the humans and chimpanzees and most distantly related?

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anonymous · Answer

We don't have a copy of "the chart" that the question is referring to. However, current data indicate that the next closest to humans and chimps are the modern-day gorillas, which are thought to have branched off from an ancestor they shared with humans and chimps. From the trees I've seen it looks like some form of proteobacteria are the most distant from humans and chimps. Bacteria certainly appear to be older than the archaea.